1) The world's oldest living plant is believed to be a clonal shrub called "Old Tjikko" in Sweden, estimated to be over 9,500 years old.

2) The world's largest species of shark, the whale shark, can reach lengths of up to 40 feet (12 meters) and weigh over 20 tons.

3) Michael Phelps, an American swimmer, has won a total of 28 Olympic medals, including 23 gold medals, making him the most decorated Olympian of all time.

4) The Plitvice Lakes National Park, situated in Croatia, is a stunning natural wonder known for its cascading lakes, waterfalls, and vibrant turquoise-colored waters. It is a UNESCO World Heritage site and attracts visitors who come to explore its picturesque trails and scenery.